Given Hasbro's history of releasing vehicles where they can use old molds (even from 1977 if need be), I seriously doubt this is true.
However, having said that, there sure are a lot of details in this report and you really have to wonder how it's so detailed if it's not true:
"GREAT news after speaking to many people at Hasbro a reliable source got an employee to give details on a forth coming AT TE, YES YOU HEARD. The Vehicle will be 2 ½ feet long with moving legs. The rear will open up to reveal a moulded interior which will include seats for some clones. As for firepower the ball turrets will be similar to the Gunship and the roof mounted turret will fire a missile and rotate, finally somewhere to put that AT TE gunner. To go in the opening Cockpit two figures will be packed in Ala AT AT; these will be a Clone Pilot and a Clonetrooper. Also mentioned along with more of what were getting already were more Choppers, expect certain troopers and a Jedi. Thank you to our informant for this news. To discuss this amazing news join us in our forums by clicking the image."
Like CHEWIE, if true, and if it's even $200, you can put me down for 2-3 of these for sure.